code: def test_Init(self) -> None:
      self.assertEqual(self.t.transform_parameters, {"x"})
  
file_path: Ax/ax/modelbridge/transforms/tests/test_logit_transform.py
imports: from copy import deepcopy
  from ax.core.observation import ObservationFeatures
  from ax.core.parameter import ChoiceParameter, ParameterType, RangeParameter
  from ax.core.search_space import SearchSpace
  from ax.exceptions.core import UnsupportedError, UserInputError
  from ax.modelbridge.transforms.logit import Logit
  from ax.utils.common.testutils import TestCase
  from ax.utils.testing.core_stubs import get_robust_search_space
  from scipy.special import expit, logit
label_desc: Use image node_id 3 for calling the LogitTransformTest obj's underlying member method code with example usage: obj.test_Init() without return types